What term describes a disruption in flight operations?

The term that best describes a disruption in flight operations is "Irregular Operations." This term encompasses a wide array of scenarios that lead to deviations from the standard flight schedule and procedures. Irregular operations can include cancellations, delays, or diversions caused by various factors such as weather events, technical issues, or logistical challenges. It reflects the operational difficulties airlines face in maintaining a smooth flow of services.

While "Operational Lapse" may denote a breakdown in service, it doesn’t specifically address the nuances of aviation operations in the same comprehensive way that "Irregular Operations" does. "Flight Interruption" typically suggests a halt in a particular flight rather than the broader range of irregularities affecting overall operations. Similarly, "Service Delay" refers specifically to the postponement of scheduled services but does not capture other disruptions like cancellations or diversions. Thus, "Irregular Operations" is the most appropriate term as it accurately represents a variety of disruptions within flight operations.